Hajime is missing a finger, and as a result, he is substantially weaker because it adds more difficulty in gripping his rapier / weapon. He's still strong doe

Daisuke has innate potential but thus far he is the weakest Guardian in strength. It's covered up by his higher tolerance for pain.
His future version is a whole different story that'll be reached during the third arc-
[s]the truth is, he's a masochist[/s]